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<p>Here, we report an innovative electrospun polymer nanofiber doped with rare earth ions Eu<sup>3+</sup> prepared by electrospinning for designing smart fabrics. The reason behind choosing polymers is that, pure RE complexes usually do not have good thermal stability and high mechanical strength. The polymer encases the europium ions and protects them from external factors including oxygen, moisture, and even other ions that could interfere with the luminescence process. This encapsulation is necessary for stable and efficient emission. By designing the polymer matrix, non-radiative energy losses which would otherwise release energy as heat instead of light can be reduced. Polymers can transfer energy to the europium ions efficiently by acting as an antenna. Eu<sup>3+</sup> is very sharp emission bands and millisecond lifetime, large stokes shifts, high yield of luminescence in visible light region, extensive attention of opto-device engineers and Practical applications in modern lighting and display fields. The photoluminescence property shows superior bright red emission spectra from the Eu<sup>3+</sup> and relatively stronger hypersensitive behavior of the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition. The gradient red emission from the electrospun nanofibers was intense when the Polymer/Eu<sup>3+</sup> concentration were varied. In this paper polymers like poly(acrylonitrile) PAN/Eu<sup>3+</sup> , Poly(ethylene oxide) PEO/Eu<sup>3+</sup> , were used, which show unique features in terms of high structural and chemical flexibility, low fabrication cost and potentially useful in photonic nanodevices. Nanofibers of polymer/Eu<sup>3+</sup> blends were characterized by Scanning Electron Microscopy, Fourier Transform InfraRed, X-ray diffraction and Photoluminescence. These electrospun nanofibers are very much useful in the latest technology for Smart Textiles and developing protective fabrics with thermal comfort. These fabrics also used to defend from wide variety of environmental hazards. This paper highlights the promising applications of electrospinning for developing protective fabrics and also shows the potential application in various polymer optoelectronic devices.</p>

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Comparative photoluminescent study of PAN/Eu3+ and PEO/Eu3+ electrospun nanofibers in smart textile applications

  • 期刊论文

  • 发表日期：

    2025年4月16日

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  • Sangeeta G. Itankar,
  • Subhash B. Kondawar,
  • Manjusha P. Dandekar,
  • Prerna R. Modak

摘要

Here, we report an innovative electrospun polymer nanofiber doped with rare earth ions Eu3+ prepared by electrospinning for designing smart fabrics. The reason behind choosing polymers is that, pure RE complexes usually do not have good thermal stability and high mechanical strength. The polymer encases the europium ions and protects them from external factors including oxygen, moisture, and even other ions that could interfere with the luminescence process. This encapsulation is necessary for stable and efficient emission. By designing the polymer matrix, non-radiative energy losses which would otherwise release energy as heat instead of light can be reduced. Polymers can transfer energy to the europium ions efficiently by acting as an antenna. Eu3+ is very sharp emission bands and millisecond lifetime, large stokes shifts, high yield of luminescence in visible light region, extensive attention of opto-device engineers and Practical applications in modern lighting and display fields. The photoluminescence property shows superior bright red emission spectra from the Eu3+ and relatively stronger hypersensitive behavior of the 5D0 → 7F2 transition. The gradient red emission from the electrospun nanofibers was intense when the Polymer/Eu3+ concentration were varied. In this paper polymers like poly(acrylonitrile) PAN/Eu3+ , Poly(ethylene oxide) PEO/Eu3+ , were used, which show unique features in terms of high structural and chemical flexibility, low fabrication cost and potentially useful in photonic nanodevices. Nanofibers of polymer/Eu3+ blends were characterized by Scanning Electron Microscopy, Fourier Transform InfraRed, X-ray diffraction and Photoluminescence. These electrospun nanofibers are very much useful in the latest technology for Smart Textiles and developing protective fabrics with thermal comfort. These fabrics also used to defend from wide variety of environmental hazards. This paper highlights the promising applications of electrospinning for developing protective fabrics and also shows the potential application in various polymer optoelectronic devices.